VIRTUAL MEMORY SOLUTION

Have you ever come across a system with the low virtual memory error of a thing?below are possible solutions to such error message:

To resolve this behavior, increase the size of the paging file. To do so, follow these steps as appropriate for your operating system.

Windows 2000

1. Right-click My Computer and then click Properties.
2. In the System Properties dialog box, click Advanced
3. Click Performance Options.
4. In the Virtual memory pane, click Change to increase the paging file.
   
   Windows 2000 requires an Initial value of 126 MB for debugging.
5. After you change the setting, click Set, and then click OK.
6. In the System Control Panel Applet dialog box, click OK to the following message:
   The changes you have made require you to restart your computer before they can take effect.
7. Click OK to close the Performance Options dialog box, and then click OK to close the System Properties dialog box.
8. When you are prompted to restart your computer, click Yes.

Windows XP

1. Click Start, right-click My Computer, and then click Properties.
2. In the System Properties dialog box, click the Advanced tab.
3. In the Performance pane, click Settings.
4. In the Performance Options dialog box, click the Advanced tab.
5. In the Virtual memory pane, click Change.
6. Change the Initial size value and the Maximum size value to a higher value, click Set, and then click OK.
7. Click OK to close the Performance Options dialog box, and then click OK to close the System Properties dialog box.

SHARING FOLDERS ON A WIRELESS NETWORK

There is one thing we need to understand in NETWORKING, we should put to mind that wireless network environment works the same way with a wired environment, the reason why we make use of wireless network is:

1. Cost effective

2. Clean environment

• COST EFFECTIVE

Instead of using wired network for a home or small office network it is better to use wireless network, it reduces the cost u will spend to create a wired network. In the case of a 2 storey’s building it will cost a lot of money in the sense that more labor will be needed to run the wiring and lot of energy will be needed. So when you make use of wireless network the cost spent on the device and labor will be reduced and time wise it will be favorable.

• CLEAN ENVIRONMENT

When you make use of wireless network there will be no wires scattered all over the place and every thin will be neat. But in the case of centralized network it is good to make use of wired LAN so the speed used to communicate with other system will be up to 100mbps, but in the case of wireless network the speed it runs to communicate with the computers on the network is about half of what the wired network make use of.

PERE 2 PEER NETWORK

First of all we need to understand better what the peer 2 peer network is all about! A peer 2 peer network is a network that does not have a centralized server that gives authentication and security. But sometimes people tend to have a system that serves as a dedicated server, but the question is: what makes it a dedicated server? The reason why is called a dedicated server is because sometimes it serves as a print server, internet connection server, is used for sharing important folders on the network.

CENTRALIZED NETWORK

A centralize network is a network that have a centralized server which is used for authentication, security and network monitoring. What makes this possible is the use of Active Directory in windows server.

• STEPS TO SHARE A FOLDER ON A NETWORK

1. Create the folder that u wish to share

2. Right click the folder

3. Go to properties from properties

4. You go to sharing

5. You will see option that say share network sharing and security

6. Then you will see the box that states share this folder on a network.

You must note one thing that before other users can access the shared folder on the network they must all be in the same workgroup and they must have the permission to do that.

• HOW TO CREATE PERMISSION FOR A SHARED FOLDER

First of all you must disable simple file sharing if it is enabled on your system, the reason is because if it is enabled it won’t be possible for you to create security for your shared folder.

DISABLING SIMPLE FILE SHARING

1. You get to my computer go to the tool bar

2. At the tool bar locate TOOLS

3. Click TOOLS

4. At the drop down list locate FOLDER OPTIONS

5. From the folder options click on VIEW

6. From the view menu check for ADVANCED SETTINGS

7. From the advanced settings scroll down to locate USE SIMPLE FILE SHARING at the last

8. Uncheck the box, and then leave the environment.

After all this procedure you are okay to create security for your shared folder, shared printer, shared scanners.

STEPS TO CREATE PERMISSION OR SECURITY FOR A SHARED FOLDER

After the creation of the shared folder you follow this step to create permission for the folder

1. Right click the folder

2. Properties

3. Locate security

4. From there create the permission that fits you depending on how you want it to be.

Material by: Engr Bassey David Bassey

How VPN and Dial-Up Network works.

 

VPN AND DIAL UP NETWORK

There are some big organizations which requires their staffs to travel to other branch of their companies for meeting purposes or research purposes, and sometimes there are some who have field engineers that travel round the globe for some contract and would need to access the companies data base from where ever they are, that’s why the VPN and the DIAL-UP network is needed.

VIRTUAL PRIVATE NETWORK (VPN)

Virtual Private Network can be defined as a means of communication from a remote location for easy access to organization data base.

CONFIGURING VPN VPN SERVER IN WINDOWS XP

1. From the desktop right click MY NETWORK PLACES click PROPERTIES

2. Locate and click CREATE A NEW CONNECTION

3. WELCOME TO NEW CONNECTION WIZERD will come up click on next to continue.

4. You get to NETWORK CONNECTION TYPE locate SET UP AN ADVANCE CONNECTION check the box and click next to continue.

5. You get to ADVANCE CONNECTION OPTIONS check the box ACCEPT INCOMING CONNECTION click next to continue.

6. You get to INCOMING VIRTUAL PRIVATE NETWORK CONNECTION (VPN) CONNECTION check the box ALLOW VIRTUAL PRIVATE CONNECTIONS click on next to continues.

7. The USER PERMISSIONS page will appear, there you choose those that you want to access the VPN server from a remote location. Click on next to continue.

8. The NETWORK SOFTWARE page will appear for you to choose which network protocol you want remote users to connect through. Click next to continue.

9. The COMPLETING THE NEW NETWORK CONNECTION WIZERD page will appear, click finish to end up the setup.

To be sure that you have created a new VPN SERVER on your system, follow this step to be sure.

· Right click MY NETWORK PLACES on the desktop, click on PROPERTIES.

· Then locate INCOMING on top of the LAN you will see a diagram of A computer with modem beside it signifying the VPN SERVER.

HOW TO CONNECT TO A VPN SERVER IN WINDOWS XP.

1. Right click my NETWORK PLACES on your desktop

2. Click on properties

3. locate CREATE A NEW CONNECTION and click on it

4. A wizard will come up that will direct you on how to configure VPN click next to continue.

5. You will get to NEW CONNECTION TYPE check the box CONNECT TO THE NETWORK AT MY WORK PLACE click next to continue.

6. You will see NETWORK CONNECTION check the VIRTUAL PRIVATE NETWORK CONNECTION and click next to continue.

7. CONNECTION NAME page will appear, type the name of your company in the space provided. E.g. your company name is ABC, you just type ABC in the space provided. Click on next to continue.

8. THE VPN SERVER SELECTION page will appear, type the IP address of the VPN server that you want to connect to and click on next to continue.

9. The COMPLETING THE NEW NETWORK CONNECTION WIZERD page will appear, click finish to end up the setup.

To be sure that you have created a new connection to the VPN SERVER on your system, follow this step to be sure.

· Right click MY NETWORK PLACES on the desktop, click on PROPERTIES.

· Locate VIRTUAL PRIVATE NETWORK under the LAN, from there you can connect to the VPN server.

Material by: Engr BASSEY DAVID BASSEY